Gluing machine



W. A. WEIGHTMAN AND C. H. NITSCH.

GLUING MACHiNE.

APPLICATION FILED MAR. 24, 1921.

Patented Nov. 28, 1922.

6 SHEETS-SHEET 1.

o m Z v M mu .r I m w a W. A. WEIGHTMAN AND C. H. NITSCH.

GLUING MACHiNE.

APPLICATION FILED MAR. 24. 1921.

1,437,285, Patented Nov. 28, 1922.

6 SHEETSSHEET 2.

W. A. WEIGHTMAN AND C. H. NITSCH.

GLUING MACHINE.

APPLICATION FILED MAR. 24. 1921.

1,43?,285. Patented Nov. 28, 1922.

6 SHEETSSHEET 4.'

W. A. WEIGHTMAN AND C. H. NITSCH.

GLUING MACHINE.

APPLICATION FILED MAR. 24. 1921.

NN QNN Maw W. A. WEIGHTMAN AND C. H. NITSCH.

GLUING MACHINE.

APPLICATION FILED MAR. 24, 1921.

6 $HEETSSHtE1 6.

Patented Nov. 28, 1922 STATES PATENT OFFICE.

WILLIAM A. WEIGHTMAN AND CHARLES H. NITSCH, OF PHILADELPHIA, PENNSYL-VANIA, ASSIGNORS TO STOKES & SMITH COMPANY, OF SUMMERDALE, PHILADEL-PHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

GLUING MACHINE.

Application filed March 24, 1921. Serial No. 454,990. 7

or blanks, usually of paper, which are subsequently applied as coveringsor wrappings to box shells or packages.

An important object of the invention is to provide means for applyingglue either to substantially an entire surface of each of the blankswhich are successively fed to the gluing mechanism, or for applying mar-20 ginal stripes or other stenciled patterns of glue to the blanksurfaces, and to organize the machine in general so that the differentgluing devices may be-conveniently used alternatively as desired.

Another important object is to provide new and improved means foroperating the gluing devices so that the devices are renderedinoperative whenever a sheet-or blank is omitted by the sheet feedingmechanism. An, incidental object is to eliminate electrical devices inconnection with the glue omitting arrangement and to substitute entirelymechanical devices for performing this function.

3 Another object is to provide improved v and simplified means formounting the pad or blanket on the blank carrying platen.

Another object is to provide for movably or adjustably mounting certainimportant 0 parts, such as parts carrying the stripe or stencil gluingdevice.

Another object is to provide improved transferring "mechanism for.taking the blanks from the gluing platen and deliver- 45 ing them toanother machine, or to suitable receiving devices of another machinesuch as a package wrapping or box part-covering machine with which thepresent machine may be associated in use.

A further important object of the invention is to attain the abovedescribed and other objects in a machine of the general characterdisclosed in United States Patent 29, 1918, and in addition to improvethe general organization and construction of such machines in variousways as sufficiently explained hereinafter.

The advantages and characteristics of the invention are furthersufiiciently explained .in connection with a detail description of theaccompanying drawings,- which illustrate an exemplifying structureembodying the invention. After considering this exemplificjation personsskilled in the art Will understand that many variations may be made indetails as well as in combinations and sub-combinations of parts, and Wecontemplate the employment of any structures that are properly withinthe scope of the appended claims. I

' In the accompanying drawing: Fig. 1 is a right side elevation ofamachine embodying the invention.

Fig. 2 is a left side elevation.

Fig. 3 is an elevation, enlarged, of the upper portion of the machine,from the front; that is from the left of Fig. 1.

Fig. 4 is a view still further enlarged of the upper right hand portionof the mechanism shown in Fig. 3.

Fig. 5 is a vertical longitudinal section of the upper part of themechanism in the same scale as Fig. 4.

Fig. 6 is a vertical sectional diagram showing mainly positions of thegluer operating mechanism, glue feed mechanism, etc. Fig. 7 is a rightside elevation of the cam mechanism of Fig. 6 and some related parts.

Fig. 8 is a fragmentaryplan view of the sheet take-off mechanism.

Fig. 9 is a detail of short-feed roll operating mechanism.

The machine has a main frame comprising the side u right members 1 and 2connected by suita le cross members. Desirably the side members havelegs 3 provided with casters 4.

The main frame supports an auxiliary frame 5 Which carries certainoperative parts of the mechanism including the sheet feed mechanism,glue tank, main gluing rolls and the alternatively used pattern orstencil gluing device. The auxiliary frame comprises side members 6 and7 connected by suitable cross pieces such as rods 8 and 9;

and it is guided for vertical movement in the main frame, substantiallyin the manner shown in Patent 1,282,948, above mentioned. The verticaladjustment of the auxiliary frame is accomplished by screws 10 connectedto the side members 6 and 7 at 11 and engaging rotatable nuts 12, whichbear against seats on transverse frame members 17. These nuts areprovided with bevel gears 13. The two bevel gears 13 are engaged bypinions 14 on a transverse shaft 15 mounted in bearings 16 on framemember 17. One of the bevel gears 13 is also engaged by a pinion 18 on ahorizontal shaft 19 extending toward the front of the machine, where itis provided with a hand wheel 20 to which manual power may be applied tolift or depress the auxiliary-frame.

At the rear of the machine the side members of the auxiliaryframesupport the in- .in-the above identified patent.

clined reciprocating table 25 on which the stack of sheets or blanks Sis supported in suitable guides 26. At the front of the machine theauxiliary frame supports a removable glue pan 27, the construction andarrangement of which are substantially as The side members of theauxiliary frame also support in suitable bearings a transverse shaft 29,which carries a glue distributing roll 30. Above the distributing rollthe main frame side members support in suitable bearings a transverseshaft 31 on which is mounted the cylindrical blank platen 32; andintermediate the distributing roll and the blank platen are the main (orall-over) gluing rolls 33 and 34, each consisting of spaced flanges withcylindrical peripheries, the flanges of one of the rolls being placedlongitudinally opposite the spaces of the other roll, so that byco-operation the two rolls usually entirely cover the surface of theblank with glue, although they may be arranged to apply a striped gluepattern if so desired. These glue rolls are carried detachably insocket-bearings in the ends of scissors arms -35, which are fulcrumed onthe sameaxis as" shaft 29, and the lower ends 'of these arms areconnected by toggle links 36 to vertical rods 37. These rods areprovided with springs 38, hearing against washers secured to the ends ofthe rods and against abutments 39 carried by side plates 6 and 7,respectively. The springs normally urge rods 37 downward, and thusthrough the toggle linkage urge the main gluing rolls toward engagementwith the surface of the sheet carrying member of the platen, as latermore particularly explained. The general arrangement of the gluedistributing roll and main gluing rolls and their operating linkage issimilar to that disclosed in the above identified patent.

The reciprocating table carrying the stack of blanks S is moved by bellcranks 40, mounted on a transverse shaft 41. One arm of each bellcrankis connected by a link 42 to a lug 43 fixed to the table. The bellcranks are operated by eccentrics 44 on a transverse shaft 45, eacheccentric being connected by a link 46 to the other arm of the adjacentbell crank 40.

At each advance movement of the blank table a blank is seized forfeeding by a rotary suction roll 47 and guided by the assistance oftransverse guide member 48 between feed rolls 49 and 50. The upper roll49 is mounted in stationary bearings and the lower roll 50 is carried inbearings on arms 51 pivoted at or about the axis of suction roll 47.Arms 51 are connected by links, or push rods 52, one of which. may beplaced near each side of the 'machine, to operating arms 52*, carried bysleeves 52 rotatably mounted on shaft 41 (see Figs. 4 and 7). Thesesleeves are separated near the center of the machine as best shown inFig. 7, to accommodate other operative parts located onand near shaft41, and the separated sleeves are connected, to move together, by yokemembers 52. One of the sleeves 52 has an arm 54*, provided with a camroller 54 and this engages a cam 54 on shaft 45, the cam being contouredand arranged so that at every rotation of the shaft 45 the movable feedroll 50 is withdrawn and again returned to active position at the propermoment to grip the forward edge of a sheet delivered by the suctionroll, and advance the sheet over a fixed guide plate 53 to a point Whereit is seized by the platen grippers.

To detect the failure of the blank feeding mechanism to feed a blank,and to thereupon withdraw the gluing rolls so that glue will not beapplied to the platen surface, the following mechanism is provided,which 1s entirely mechanical and, therefore, dispenses with electricaldevices employed in the patented structure above referred to and is alsovery certain and positive in operation.

Feed roll 49 has an annular space or channel 60 to accommodatethe'curved upward end 61 of a trigger 62 pivoted at 63, and having itslower end 64 adjacent to a stop 65 provided with a shoulder 66 and twosteps 67 and 68. This stop is carried by an arm 69, fulcrumed at 70 andoperatively united with another arm 71, which carries a cam roller 72running on the periphery of a cam 73 fixed on shaft 45; and arm 71 alsocarries a'sleeve 74 in which is mounted a plunger 75 urged outward by aspring within the sleeve. Arm 71 also has a socket 76 containing aspring 77 bearing against a spring abutment carried by a transverseframe rod 78, this spring serving to urge arm 71 in a direction toengage cam roller -7 2 with its cam, and also to move connected actionof the trigger mechanism, the following means are provided: Fixed onshaft 41 is an arm 80 which has a" transversely arranged sleeve 81 inwhich is a plunger 82 carrying near one end a cam roller 83 co-operatingwith a cam 83 on shaft 45. Cam 83 has a part-circular peripheral portionand a shorter gap or depressed portion '83, of smaller radius. Plunger82 also has an extension 84 formed with a beveled face 85, and a notch86 to co-operate with the end of plunger 75. Plun cr 82 at the oppositeend has a cam roller 8 engaging a face cam 88 carried by shaft 45.Plunger 82 is acted upon by a spring 89 within sleeve 81 tendin r tomove the plunger to the right, as viewed in Figs. 4 and 7.

Cam 88 is so arranged that at each rotation of shaft 45 it moves theplunger 82, and so moves cam roller 83 into the gap 83 of cam 83 at atime when that gap, is opposite the side face of the roller. Cam 88passes away from cam roller 87 before cam .roller 83 can be lifted byits cam. At each After cam roller 72 rotation of shaft 45 cam roller 72tends to drop; into the gap of cam by reason of sprlng 7 7 acting on arm71, and whenever a sheet is being properly fed at that time the tr gger62 is moved as indicated in full llnes in Fig. 6, carrying its lower endaway from surface 67 of block 65 and the cam roller 72 is thus permittedto drop into the depression of its cam. In doing so the end of plunger75 carried by arm (1 is moved out of the path of the end 84 of plunger'82. Therefore, when plunger 82 is moved over by cam 88 as previouslydescribed, its end 84 1s notengaged by plunger 75 and as soon as cam 88passes away from cam 87 the plunger 82 is retracted by its spring,carrying its cam roller 83 out of the gap of cam 83 before the cam canact upon the roller. Consequently arm 80 is not actuated and theposition of the gluin rolls is not affected. I rops into the gap of itscam 1t 1S again moved outward onto the enlarged'peripheral portion ofthe cam, and in th1s movement at each rotation the arm 69 connected witharm 71 is depressed and block 65-is depressed so that the lower end oftrigger 62 is permitted to swing over stop face 67. Whenever a sheetfails to be fed by the blank feeding mechanism the trigger wlll remainin this position, indicated by dotted lines in Fig. 6, and consequentlywhen the gap of cam 73 comes under cam roller 72 the roller cannot dropinto it; the.

end of plunger 7 5,is thus held in the path of plunger 82, and when thatplunger is moved over by its cam 88 (this movement taking place beforethe time when the sheetcarrying surface of the platen reaches the 'firstgluing roll) the beveled face 85 of the plunger extension depressesplunger 75,

which thereupon snaps into notch 86 of" plunger 82; cam roller 83-isthus held in active relation to its cam 83* after cam 88.- passes awayfrom cam roller 87, and cam roller 83 is elevated onto the enlargedperipheral portion of cam 83. Arm is thus moved so that the ends of arms54 are raised, and the rods 37 are raised and actuate the togglemechanism so that the gluing rolls are retracted and do not come incontact with the blank carrying portion of the platen. As soon asanother sheet is properly fed the trigger is moved to the solid lineposition of Fig. 6, and cam roller 72 drops into its cam gap and theparts function normally for gluing as previously explained.

Trigger 62 may be balanced to move by gravity, or a positive triggeractuating device may be provided, such as a bell crank 90 pivoted at 91,and having one arm connected by a link 92 with the blank table andanother arm or toe 93 arranged opposite the long arm of the trigger.This device acts at each return movement of the blank table topositively move the trigger to the position shown in Fig. 5.

The glue distributing roll 30 is supplied by a dipper roll 100 carriedby a shaft 101 mounted in'slidable carriers 102 and these carriers areadjusted by screws 103 having hand wheels 104 so that the carriers andthe dipper roll may be moved into contact with the distributing roll andproperly adjusted in contact, or the dipper roll may be retracted toco-operate with the stencil gluer, later to be described.- \Vhen roll100 engages the stencil gluer, it is desirable to provide means forremoving excess glue and also to evenly distribute glue on the roll 100.For this purpose the carriers 102 have pivoted arms-105, and a doctor orpressure roll 106-has its shaft mounted detachably in socket bearings onthe arms.

These arms 105 have downward projections 107 engaged by screws 108, theends of which bear against lugs 109 on the carriers and the screws havewinged heads 110, so that by turning the screws the engagement of thedoctor roll with the dipper roll may be properly regulated. When thedipper roll is in engagement with distributing roll 30, for supplyingglue to the allover gluers, the pressure roll 105 may be removed fromits bearings or it may beretracted from engagement with roll 100.

Main framemembers 1 and 2 have lugs 115 Fig. 2, in which short swingingarms 116 (see also Fig. 5) are pivotally mounted on studs or trunnions117. These arms are provided with bearings 118 for a shaft 119 whichcarries different stenciling or glue pattern applying devices. Thebearings have pivoted caps secured by pins or screws so that shaft 119may be easily dismounted when desired. l

The glue stripe or stencil pattern applying devices which may be carriedby shaft 119 include the following: For applying transverse stripes tothe blanks, the shaft is provided with one or more pairs of arms 120,each of which has a split sleeve 120 surrounding the shaft, and the endsof this sleeve are drawn together by a screw 120". Thus the arms may beadjusted either laterally or angularly on the shaft. Each pair of thearms supports a transverse bar 121 which may be of any suitablematerial, in the present'instance wood, and is detachably secured bysuitable means such as screws 122. This bar is'provided with a printingsurface 123 of suitable material, such as rubber composition, forapplying a transverse stripe of glue to the blank. For applyinglongitudinal stripes to the blanks one or more pairs of arms 124 areprovided. Each pa1r of these arms is desirably connected to a splitsleeve 124 surrounding shaft 119. The ends of this sleeve are drawntogether by a screw 124 so that the two armsof a pair may be adjusted asa unit, either longitudinally or angularly, on the shaft. Each pair ofarms carries an arc-shaped sector 125 having a flange 125 provided witha series. of screw holes; 125 Longitudinal striping members 126 ofsuitable rubber composition and of various lengths are provided andthese are attached to the sectors in the desired arrangement by plates127, which may be of various lengths, and screws 128. Usually, at

'least two of the sector units 125, each comprising a pair of arms 124,a split sleeve 124, and carrying a suitable glue imprinting member 126,are provided, to place two longitudinal stripes near the margins of ablank, but evidently by the described devices any desired stencilpattern of longitudinal and transverse stripes, may be provided for.

The stencil gluer is desirably moved out of contact with the blankcarrying surface of on arms 132 of bell cranks pivoted at 133 and theother arms 134 of'these bell cranks are acted upon by horizontal rods135. The rear ends of these rods engage the ends of arms 136 (see Figs5, 6 and 7) which are operat-ively integral with arms 54 which operatethe main gluing rolls. In this way the stencil devices when in use, aremoved away from the platen at the proper time when a sheet is omitted,by the same mechanism described in connection with the main gluingrolls. 2

When the blanks are to be glued all over, the stencil mechanism isremoved by releasing the caps of bearings 118 and lifting the stencilshaft 119 out ofits bearings. The 80 dipper roll 100 is moved over intocontact with distributing roll 30 and in this position the dipper rollis driven by a gear 140 on distributor roll shaft 29, engaging a gear145 on dipper roll shaft 101. The pressure roll 106 may be removed. Whenthe stencil gluer is to be used its shaft is placed in its bearings andthe stencil devices are properly arranged and adjusted on the shaft. Thedipper roll 100 is then moved over into engagement with the stencilapplying devices and the pressure roll 106 is put in position andadjusted for the supply of the proper amount of glue. In this positionthe dipper roll is driven by an idler pinion 141 which always engagesthe teeth of gear 140 previously mentioned, and for this purpose ismounted on an arm 142 pivoted at a point concentric with shaft 29. Thelower end of arm 142 moves over a sector on one of the side framemembers and when the main gluer is in operation is secured in an idleposition at the point 143 by a-screw or bolt. When stencil gluing is inoperation the arm is moved over and secured at the point 143 and in thatposition the idler pinion engages gear 145 to drive the dipper roll.When stencil gluing is in progress the main or all over glue rolls areleft in position to act as guide rolls for the blanks intermediate thefeed mechanism and-the stencil gluer, these main glue rolls being, ofcourse, suitably cleaned and the distributing roll 30 being als cleanedso that no glue is applied to the blanks by the main glue rolls.

The driving mechanism, except for modifications and improvementsmentioned above, may be substantially as shown in Patent 1,282,948,above mentioned, but preferably driving mechanism arranged as here shownmay be employed as follows: A suitable initial driving device such as anelectric motor F150 is suitably secured on the main frame and this has apinion 151 engaging a gear 152 on shaft 153. This gear is connected withthe dri ing member 154 of a clutch 155 which may be shifted by a rod 156and lever 157 having a handle 158 convenient to the operator. The driven159 engaging a gear 160,- and this is connected by bevel gears 161 to ashaft 162 leading to a gear box 163 of any desirable type providing anumber of gear changes, controlled by a handle 164. The driven member ofthe gearing-in this instance is a worm 165 which drives a worm gear 166.on one end of the platen shaft 31. The other end of shaft 31 isconnected by bevel gears 170 to the upper end of a vertical shaft 171secured in a main frame member by suitable bearings such as bearing 172.A side frame member-of the supplemental frame has an extension 173providing a bearing for the.sleeve of bevel gear 174 which is slidablymounted and splined on shaft 171 so that the bevel gear travelsvertically in accordance with the vertical adjustment of thesupplemental frame. Gear 174 engages a bevel pinion 175 on the adjacentend of thedistributor. roll shaft 29. The main gluing rolls" 33 and 34may be driven in any of the ways described in the previously identifiedpatent. For instance, one of them may be driven by gears 17 6 from oneend of shaft 29 and the other may be driven by gears 177 from the otherend of shaft 29 or this driving arrangement may be changed as may beconvenient. The side frame member of the supplemental frame has anotherextension 180 providing a bearing carrying a sleeve to which isconnected a bevel gear 181 and the gear sleeve is splined on shaft 171,as in the case of gear 174. Gear 181 engages a bevel gear 182 on theadjacent end of cam shaft 45. On the lower end of shaft 171 is a camdrum 190 having a cam groove 191 in which is located a cam follower 192carried by one end of a lever 193 fulcrumed at 194 and having its otherend connected by a link 195 to the piston of a suitable pump 196 whichis connected by a tube 197 to suetion roll 47. Suitable arrangement ismade for the control of low pressure induced in the suction roll by pump196 to properly control the sheet feeding action of the suc-' tion roll.Such mechanism is well known and need not be particularly described.

The construction of the blank platen 32 with its sheet gripping andother devices may be in general as described in the previouslyidentified patent. Improvements are made, however, in the means forsecuring a sheet receiving member, such as a pad or blanket, to thesurface of the platen, embodied in this instance as follows: Thepartcylindrical surface 200 is provided witn a multiplicity of slots201, each of which is usually of considerable length in the direction ofthe circumference ofthe platen and these slotsmay be arranged in rows assufiic-iently indicated in Fig. 3. On shaft 31 are -mounted a suitableplurality of blank securing devices, each comprising a short sleeve orhub 202 5),s1idably mount ed on the shaft and secured in respect toangular and longitudinal position by a set secured in outward positionby a pin 206.

Theouter end of eachplunger is adapted to fit the slots 201 and in theend of each plunger is a screw hole adapted to receive ascrew 207. Asuitable blank holding device, such as a blanket 208 shaped to agreesubstantially with the shape of the blank, is secured to the platen byfirst adjusting a suitable -number of devices 202 in different slots 201to agree more or less with the peripheral contour of the blank, and bythen inserting screws 207 to secure marginal portions of the blanket tothe ends of the plungers 205. The blanket forms a raised surface withwhich the glue printing devices co-operate without possibility ofengaging other portions of the platen.

The invention also includes improved means for seizing and transportingsheets delivered by the platen to another co-operating machine,comprising in the. present instance the following: Frame members 1 and 2have upward extensions 210 providing bearings for sprocket shafts 211and 212 and for a conveyor shaft 213 and these frame members alsosupport extension bars 214 which carry in adjustable socket bearings 215a conveyor shaft 216. Between shafts 211 and 212 is a transverse bar 217secured in frame members 210. A pair of laterally adjustable sprocketframe mem bers 218 is mounted on the shafts 211, 212, and 217. Each ofthese frame members has a split clamping member 219 provided with ascrew 220 so that the lateral position of the sprocket frame member maybe fixed after adjustment. The sprocket frame members also desirablycomprise heads 218 and above'mentioned. For each sprocket frame twosprockets 221 are provided, one on. shaft 211 and the other on shaft212, and one of these sprockets has a splined connection with its shaft.Specifically, the two sprockets 221 on shaft 211 are splinedso that theyrotate with.it and can slide axially on it, while the sprockets 221 on,shaft 212 have merely a bearing fit on the shaft so that they may rotatefreely and slide laterally on the shaft. The sprockets. are connectedtorthe adjacent heads 218 and 218 by yoke members 218 and 218 engagingannular grooves 218 in the sprocket hubs. The two sprocketscorresponding to each of the sprocket frames are connected by a chain222. Each chain is providedwith a gripper or sheet directing finger 223to receive the forward edge of a sheet as it is released by the platengripping devices. The grippers on the two chains are arranged'oppositeeach other, that is they are in a line parallel to the platen axis, sothat they simultaneously engage or grip the forward edge of a sheetcarried by the platen. The construction and operation of the grippersare further described hereafter.

The sprocket frame members are adjusted laterally to agree with theposition and width of the blank, as sufficiently indicated in Fig. 3.and chains are driven by a large gear 230 on the platen shaft whichengages a gear 231 mounted on a stub shaft on one of the frame members210, and this gear drives an idler 232 on bar 217 and the idler in turndrives a gear 223 on one end of a sprocket shaft 211. The lowerstretches of chains 222 move in the same direct-ion as the upper side ofthe platen, as best understood in Fig. 5, and the chains are driven atsuch speedthat the grippers or guide fingers 223 receive the forwardedge of each sheet delivered by the platen and direct the forward edgeof the sheet to the initial end of a conveyor belt 240 which runs overbelt pulleys mounted on shafts 213 and 216 and th s conveyor beltdelivers the sheets to the machine with which the present machine isassociated, such as a box covering or package wrapping machine. Theconveyor belt is driven by a gear 241 on shaft 213 engaging gear 231previously mentioned.

The sheet grippers 223 of the transfer mechanism are, in the presentembodiment,

, in the form of curved fingers operatively integral with arms 224 andare pivoted on blocks 225, which are connected tothe chains 222. Eachblock has a projecting member 226 to co-operate with one of the fingers223. The fingers are operated by cams 227 carried by the members 218and-218 of the transfer chain sprocket frames 218. As the grippersapproach their rearward position as shown in Fig. 6, the fingers areopened the rearward cams 227 to release the sheet.

b. Vl hen the grippers have traveled forward agam and are approachingthe position shown in dotted lines, Fig. 6, the fingers are moved toopen position by the action of the forward cams 227 and after theforward edge 0 the sheet is positioned under the project ons 226, thegripping fingers are released by the cams and moved backward and upwardso that they grip the forward edge of the sheet and thereafter the sheetis transferred from the gluing platen to the conveyor 240 in a mannerpreviously described.

Features of construction other than described may be as desired, ormay-be for example as shown in the previously mentioned;

The blank directing sprockets chine, further than as here described willbe easily understood by persons skilled in the be evident thatsubordinate partsand subcombinations of the present invention arevaluable apart from the entire combination; also that many variations indetails and in combinations and sub-combinations of parts may be madewithin the principles of the invention, and we do not limit ourselves todetails, except as claimed.

lVhat we claim is:

1. Blank gluing mechanism comprising a rotary blank platen, means forfeeding single blanks successively to the platen, and an all-over gluerand a stencil gluer for alternative use acting on the platen. atdifferent points in the direction of platen rotation.

2. Blank gluing mechanism comprising a rotary blank'p-laten, means forfeeding single blanks successively to the platen, an allover gluer and astencil gluer for alterna tive use acting on the platen at differentpoints in the direction of platen rotation, and means for driving bothof the gluers.

3. Blank gluing mechanism comprising a rotary blank platen, means forfeeding single blanks successively to the platen, an allover gluer and astencil gluer for alternative use acting on the platen at differentpoints in the direction of platen rotation, and a support in which oneof the gluers is detachably mounted.

4:. Blank gluing mechanism comprising a rotary blank platen, means forfeedinp; single blanks successively to the platen, an allover gluer anda stencil gluer for alternative use acting on the platen at differentpoints in the direction of platen rotation, and means for rendering oneof the gluers inoperative while the other is in operation.

5. Blank gluing mechanism comprising a rotary blank platen, means forfeeding single blanks successively to the platen, an allover gluer and astencil gluer for alternatiyg useact-ing on the platen at differentpoints in the direct-ion of platen rotation, a support in which one ofthe gluers is detachably mounted, and means for rendering one of thegluers inoperative While the other is in operation.

6. Blank gluing mechanism-comprising a rotary blank platen, means forfeeding single blanks successively to the platen, two rotary gluers foralternative use acting on the platen at different points in thedirection of platen rotation, and means for .supplying glue to theactive gluer while the other performs a blank feeding function withoutglue supply.

7. Blank gluing mechanism comprising a rota blank platen, means forfeeding single b anks successively to the platen, two rotary gluers foralternative use acting on the platen at different points in thedirection of platen rotation, a support in which one of *the gluers isdetachably mounted, and means rotary platen, means for feeding blankssuccessiyely to the platen, two gluing devices for alternative use,means for supplying glue alternatively to the gluing devices, and meansfor operating both of the devices.

9. Blank gluing mechanism comprising a rotary blank platen, means forfeeding single blanks successively to the platen, an

all-over gluer normally in operative relationto a blank carrying surfaceof the platen for applying glue or for advancing the blanks without glueapplication, a stencil gluer, means for detachably supporting thestencil gluer in operative relation to the platen, and glue supply meansarranged to supply glue to the all over gluer when the stencil gluer isdetached and to supply glue to the stencil gluer Without glue supply tothe all over gluer when the stencil gluer is in position.

10. Blank gluing mechanism comprising a rotary blank platen, means forfeeding single blanks successively to the platen, an all over gluernormally in operative relation to a blank carrying surface of the platenfor applying glue or for advancing the blanks without glue application,a stencil gluer, means for detachably supporting the stencil gluer inoperative relation to the platen, glue supply means arranged to supplyglue to the all over gluer when the stencil gluer is detached and tosupply glue to the stencil gluer without glue supply to the all overgluer when the stencil gluer is in position, and means for driving bothof the gluers.

11. Blank gluing mechanism comprising a rotary blank platen, means forfeeding single blanks successively to the platen, and

an-all over gluer normally in operative relation to the blank carryingsurface of the platen or 'applying glue or for advancing the blankswithout glue application, a stencil gluer, a movable support for thestencil gluer, and glue supply means arranged to supply glue'to the allover gluer when the stencil gluer is inoperative and to supply glue tothe stencil gluer without glue .supply to the all over gluer when thestencil gluer is in operation.

12. Blank gluing mechanism comprising a rotary blank platen, means forfeeding single blanks successively to the platen, an all over gluernormally in operative relation to a blank carrying surface of the platenfor applying glue or for advancing the blanks without glue application,a stencil gluer, a. movable support for the stencil gluer, glue supplymeans arranged to supply glue to the all over gluer when the stencilgluer is inoperative and to supply glue to. the stencil gluer withoutglue supply to the all over gluer when the stencil gluer is inoperation,

means for driving the gluers, and means for moving the stencil gluersupport toomit glue in the absence of a blank. I

13. Blank gluing mechanism comprising a rotary platen, means. forfeeding blanks successively to the platen, an all-over gluer and astencil gluer adapted for alternative use, a retractable carrier 'foreach of the gluers, means for rendering one of the gluers inoperativewhile the other is operative, and operating mechanism for both of thecarriers including means for retracting them simultaneously upon failureto feed a blank.

14, Blank gluing mechanism comprising a rotary platen, means for feedingblanks successively to the platen, two rotary gluing devicesco-operating with the platen and arranged for alternative use, andoperating mechanism for both of the gluing devices including means forretracting them upon failure to feed a blank.

15. Blank gluing mechanism comprising a rotary platen, means forfeedingblanks successively to the platen, two alternatively operative gluingdevices and operating mechanism for both of the gluing devices in-'eluding means for retracting the gluing device which is in use uponfailure of the blank feeding means to feed a blank.

16. Blank gluing mechanism comprising a rotary platen, means for feedingblanks successively to the platen, two rotary gluing devicesco-operating with the platen and arranged for alternative use'andoperating mechanism for both of the gluing devices including means forretracting the gluing device which is in use upon failure of the blankfeeding means to feed a blank.

17. In blank gluing mechanism of the class described, a rotary platen,means for feeding blanks successively to the platen, an all:over gluingdevice, a stencil gluing device, means for retracting both of thedevices upon a blank-feed failure. a glue supplying roll, and means forengaging said roll with either the main gluing device or the gluestenciling device.

18. In blank gluing mechanism of the class described, a rotary platen,means for feeding blanks successively to the platen, an all over gluingdevice, a stencil gluing device, means for retracting both of thedevices upon a blank-feed failure, a glue supplying roll, means forengaging said roll with either the main gluing device or the gluestenciling device, and means for driving the glue roll in either of itspositions.

19. In gluing mechanism of the class described, a rotary platen, meansfor feeding blanks to the platen, a distributing roll stenciling device,a glue pan, a dipper roll in the pan, and means for shifting the dipperroll to engage either with the distributing roll or with the gluestenciling device.

20. In gluing mechanism of the class described, a rotary platen, meansfor feeding blanks to the platen, a distributing roll for a main gluingdevice, a rotary glue stenciling device, a glue pan, a dipper roll inthe pan, means for shifting the dipper roll to engage either with thedistributing roll or with the glue stenciling device, and a pressureroll to engage the dipper roll,

21. In gluing mechanism of the class described, a rotary platen, meansfor fecding blanks to the platen, a distributing roll for a main gluingdevice, a rotary glue stenciling device, a glue pan, a dipper roll inthe pan, means for, shifting the dipper roll to engage either with thedistributing roll or with the glue 'stenciling device, and a det-achablymounted pressure roll co-operating with the dipper roll.

22. In gluing mechanism of the class described, a rotary platen, meansfor feeding blanks to the platen, a distributing roll for a main gluingdevice, a rotary glue stenciling device, a glue pan, adipper roll in thepan, means for shifting the dipper roll to engage either with thedistributing roll or with the glue stenciling device, a pressure roll toengage the dipper roll, and means for adjusting the pressure roll.

23. In blank gluing mechanism of the class described, a rotary platen,means for feeding blanks successively to the platen, a main glueapplying roll, a distributing roll for supplying glue to the mainapplying roll, a stencil gluer, a glue trough, a movable dipper rolltherein arranged to, co-operate either with the distributing roll or thestencil gluer, and means for driving the dipper roll in either of itsoperative positions.

24. In blank gluing mechanism of the class described, a rotary platen,means for feeding blanks successively to the platen, a main glueapplying roll, a distributing roll for supplying glueto the mainapplying roll, a stencil gluer, a glue trough, a movable dipper rolltherein arranged to co-operate either with the distributing roll or thestencil gluer, a gear. rotatively connected with the distributing roll,a gear rotatively connected with the dipper roll and arranged to engagethe distributing-roll gear when the dipper roll co-operates with thedistributing roll, and an idler pinion engaging the gear first mentionedand ar- 7 ranged to engage the second. gear when the successively to theplaten, two rotary glue applying devices arranged for alternative use, asheet feed detector, a retracting eleferential parts of the platen, aretractable carrier for each of the glue applying devices, a sheet feeddetector, a retracting element, and means controlled by the detector formoving the element to an active position upon a skip in the blanlc feed,and an operative connection between said element and each of saidcarriers to retract the carriers simultaneously when the element ismoved to active position.

27. Blank gluing mechanism comprising a rotary platen, means for feedingblanks successively to the platen, a glue applying roll, a retractablecarrier therefor, a cam, a cam follower for retracting the carrier,means for moving the cam follower to active and inactive positions inrelation to the cam, an element acted upon by blanks going to theplaten, and means co-operating with said element and said cam followerto retain the follower in active position to retra t the carrier upon askip in the blank feed.

28. Blank gluing mechanism comprising a rotary platen, means for feedingblanks successively to the platen, a glue applying roll, a retractablecarrier therefor, a cam, a cam follower for retracting the carrier,means for moving the cam follower to active and inactive positions inrelation to the cam, an element acted upon by blanks going to theplaten, and mechanical means co-operating with said element and said camfollower to retain the follower inactive position to retract the carrierupon a skip in the blank feed. 3

29. In a blank gluing machineya stencilpattern applying instrumentalitycomprising a shaft, movable bearing-supports for the shaft, means formoving the supports, and stencil-stripe imprinting elements carried bythe shaft.

30. In a blank gluing machine, a platen, a stencil-pattern .pplyinginstrumentality comprising a shaft, movable shaft supports for movingthe shaft toward and from the platen, quickly-detachable means forsecuring the shaft in said supports, and stencilstripe imprintingelements carried by the shaft.

31. In gluing mechanism of the class deelements connected to thecarriers.

32. In gluing mechanism of the class described, a rotary glue stencilpattern applying instrumentality comprising a shaft, a plurality ofarc-shaped members movable axially on the shaft, means for securing themembers in adjusted positions, and arcshaped stencil stripe imprintingmembers detachably secured to the arc-shaped members.

33. A glue stencil pattern applying instrumentalityfor blank gluingmachines, comprising a shaft and a plurality of arms mounted thereon forangular and axial adjustment, means for securing the arms in adjustedpositions, and longitudinal and transverse glue stripe applying elementsdetachv ably secured to certain of the arms.

34. A gluing machine of the class described comprising a rotary platen,means for feeding blanks to the platen, means for gluing the blanks,blank transporting mechanism comprising a conveyor, means fortransporting blanks from the platen to the conveyor, the last namedmeans comprising blank guiding fingers, carriers for the fingers, andmeans for adjusting the carriers laterally.

35. In a gluing machine of the class described, the combination with arotary blank platen, of blank deliverey mechanism comprising transverseshafts, a pair of sprocket frames, means for adjusting .the frameslaterally, sprockets carried by each frame, one of the sprockets beingmounted on each of said shafts, the two sprockets on one shaft beingsplined thereon, a chain carried by each pair of sprockets, a blankengaging member on each chain, and a conveyor to receive blankstransferred to it by the delivery mechanism.

Signed at Philadelphia, in the county of Philadelphia and State ofPennsylvania this 22nd day of March A. D. 1921.

WILLIAM A. IVEIGHTMAN. CHARLES H. NITSCH.

